Last Modified: Apr 10, 2019
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Known Affected Versions:
12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4
Opened: May 14, 2015
When running version 12.0.0 on vCMP host versions previous to 11.5.0, the system produces a series of benign errors in /var/run/vcmpd/guestname/qemu.pid similar to the following messages: block I/O error in device 'virtio0': Input/output error (5).
Cosmetic: a small number of benign virtio0: Input/output errors appear in the guest's logs on the host. These errors are cosmetic and are a known and benign issue related to the version of qemu and how it handles newer linux kernels.
Running BIG-IP software version 12.0.0 configured for vCMP on hosts with versions earlier than 11.5.0.
None needed. These are cosmetic errors that have no impact on system functionality.